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Dorthe Ravnsbæk

Keywords

  • Materials Chemistry
  • Energy Materials
  • Batteries
  • Nano- and atomic-scale structure
  • Electrochemistry
  • in situ and operando methods

Head of the Ravnsbæk Group

Professor Dorthe Ravnsbæk
 

Developing functional materials for sustainable batteries

Research in the Ravnsbæk Group evolves around developing functional materials for sustainable batteries. Within this topic they investigate novel electrode materials for e.g. Li-, Na- and Mg-ion batteries with activities spanning from synthesis over materials characterization to battery fabrication and electrochemical analysis. Furthermore, they are involved in a series of effort exploring methods to stabilize the electrode and the electrodes under high-potential or high mechanical strain conditions.

The focus of the Ravnsbæk Group lies especially on understanding structure property relations of battery materials, that is, how does the electrochemical properties and the battery performance correlate with the nano- and atomic-scale structure of the functional components. To elucidate this they utilize a range of X-ray and neutron based techniques, e.g. X-ray scattering, to probe the structural changes as they occur inside the operating battery during charge and discharge.


Recent publications

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Ravnsbæk, D. B., Xiang, K., Xing, W., Borkiewizc, O., Wiaderek, K., Gionet, P., Chapman, K., Chupas, P., Tang, M. & Chiang, Y. C. (2016). Engineering the Transformation Strain in Li(MnyFe1-y)PO4 Olivines for Ultrahigh Rate Battery Cathodes. Nano Letters, 16(4), 2375-2380. https://doi.org/10.1021/acs.nanolett.5b05146
Ravnsbaek, D. (2019). Order-disorder transitions in battery electrodes studied by operando x-ray scattering. Acta Crystallographica Section A: Foundations of Crystallography, A75(Supplement), E308. Article MS18-02. https://doi.org/10.1107/S2053273319092489
Rasmussen, K. L., Delbey, T., Skytte, L., La Nasa, J., Colombini, M. P., Ravnsbæk, D. B., Jørgensen, B., Kjeldsen, F., Grønnow, B. & Larsen, S. (2021). In the darkest hour: Analyses of a black spot on the last page of the diary of polar explorer Jørgen Brønlund (d. 1907). Archaeometry, 63(4), 893-905. https://doi.org/10.1111/arcm.12641
Pushparaj, S. S. C., Jensen, N. D., Forano, C., Rees, G. J., Prevot, V., Hanna, J. V., Ravnsbæk, D., Bjerring, M. & Nielsen, U. G. (2016). Structural Investigation of Zn(II) Insertion in Bayerite, an Aluminum Hydroxide. Inorganic Chemistry, 55(18), 9306-9315. https://doi.org/10.1021/acs.inorgchem.6b01436